Improvement in filtering-ftnstnel



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Witnesses:

. Inventor:

N-PPI'ERS. PHOTD- MOGRAPHER WASH NGTON D C Cdiluted gunna @tutti otitis.

JOHN H. GOODFELLOW, OF TROY, NEW YORK.

Lenmrwm No. 90,523, @ma May 25, 1869.

IMPROVEMENT FILTERING-FUNNEL-S The Schedule referred to in theseLetters Patent and making part of the s ame.

To all whom 'it may concern:

" Figure 2 is a central sectionI of thesame,.taken v through the line a: x, iig. 1.

Similar letters refer' to corresponding parts in bothl drawings.

This invention consists of a funnel, having an ad- .justable screen, or iilter, attached by springs, and retained in its proper place, as set forth and described.

herein.

'.Io, enable those skilled in the art to fully understand and construct my invention, I will proceed to describe it.

A is an ordinary funnel, such asis commonly made of tin, glass, or rubber, &c. y

B is a circular filter, made of perforated tin plate, wire gauze, or other suitable material, the outer edge, -r periphery of which, coincides, or fits 'closely to lthe inner sides of the funnel.

Y C are springs, which are attached, at one end, to the under, or convexed side of the filter, and the other pressing against the upper and inner sides of the neck of the funnel, to keep the filter in its proper place, and from being moved While decanting liquids through it.

D is a small knob, on ring, at the centre` of the upper, or concave side of the filter, by which the same is putin its place, or moved.

In chemical uses, non-corrosive material should be applied.- p

Asbestos sprln gs may be substituted for metal, and platinum, gauze, or perforated glass plate, for the metal disks.

The operation, or manner of using it is as follows:

When this article is to be used for the purpose of decanting fluids from one vessel intoV another, such as a bottle or jar, with.a view to separating the sediment, or dregs, the filter B is inserted in the funnel A, and kept in its position, by the springs C pressing against the sides of the neck of the funnel, by which means the dregs, or solid `matter is `retained in'that portion ofthe funnel'above the filter, at the same time allowing the fluid to pass through its meshes, or perforaf tions, into the vessel beneath.

y It is obvious that Vthe springs, or arms may be first attached within the nozzle, and the iiltering-plate subsequently attached thereto.

One of the importantfeatures of this contrivance is, that when it is desired to use the funnel without the filter, the filter may be removed from its place in the funnel, by the knob, or ring D.

Another important feature is, that the withdrawingof the filter, as above described, permits ofthe different parts of the instrument being more handily and p'erfectly cleaned, before or after using.

I am aware that disks for percolation, or to sustain filters, have been supported by legs that expand within the funnel, but in none` has the quality of au outward spring in such legs, when passing within the nozzle, been depended on to retain the disk in place, when the funnel is turned to a horizontal position, or totally inverted. Of v course, in my apparatus, indentations, a transverse tile-like surface, or other Iikeobvious expedients within the nozzle, may be used to promote the` The ltering-funnel, provided with springs O, snbv stantially as described, and for the purpose set forth;

J OlIhT H. GOODFELLOW. Witnesses:

J .THORN GOODFELLOW, LOUIS D. BEAUREGARD. 

